PELRC | Mechanical Engineering Internship

Internship Details

A comprehensive 2-week program focused on CNC programming and machining

Duration & Schedule

2-week intensive program with structured learning and hands-on practice:

Week 1: G-code fundamentals, coordinate systems, and basic operations
Week 2: M-code programming, tool compensation, and project development
Daily practice sessions with CNC simulators and real machines
Final project: Program and machine a real component

Real-World Experience

Practical CNC programming skills you'll gain:

Hands-on G-code and M-code programming for milling and turning
Toolpath simulation and verification using CAM software
Machine setup, tool offsetting, and workholding techniques
Program optimization for efficiency and quality
Certificate upon successful completion

What You'll Gain

By the end of this internship, you'll have:

Practical CNC programming skills for your resume
A portfolio of CNC programs and machined parts
Understanding of industry-standard programming practices
Ability to troubleshoot and optimize CNC programs
Experience with CNC simulators and real machining centers

What You'll Learn

Comprehensive curriculum covering essential CNC programming skills

G-Code Fundamentals

Master essential G-codes for positioning, interpolation, and canned cycles.

M-Code Programming

Learn machine control functions, coolant control, and spindle operations.

CNC Milling Programming

Programming techniques for vertical and horizontal machining centers.

CNC Turning & Lathe

Program CNC lathes for facing, turning, drilling, and threading operations.

CAM Software

Introduction to CAM software for efficient program generation.

Tool Compensation

Master cutter radius compensation (G40/G41/G42) and tool length offsets.

Program Simulation

Verify programs using CNC simulators to prevent crashes and errors.

Program Optimization

Techniques to reduce cycle times and improve machining efficiency.

CNC Code Examples

Get hands-on with real G-code and M-code programming

G-Code Example: Contour Milling

                        ; Contour milling program
                        G21 ; Metric units
                        G17 ; XY plane selection
                        G40 ; Cutter comp cancel
                        G49 ; Tool length offset cancel
                        G80 ; Cancel canned cycles
                        G90 ; Absolute positioning
                        G54 ; Work coordinate system

                        M06 T01 ; Tool change to tool 1
                        M03 S2500 ; Spindle on CW at 2500 RPM
                        G00 X0 Y0 Z5 ; Rapid to start position
                        G43 H01 Z5 ; Apply tool length offset
                        G01 Z-5 F200 ; Plunge to depth
                        G41 D01 X20 F300 ; Cutter comp left
                        Y50
                        X80
                        Y20
                        X20
                        G40 X0 Y0 ; Cancel cutter comp
                        G00 Z50 ; Rapid retract
                        M05 ; Spindle stop
                        M30 ; Program end

M-Code Example: Drilling Cycle

                        ; Drilling program with M-codes
                        G21 ; Metric units
                        G17 ; XY plane
                        G40 ; Cutter comp cancel
                        G49 ; Tool length offset cancel
                        G80 ; Cancel canned cycles
                        G90 ; Absolute positioning
                        G54 ; Work coordinate system

                        M06 T02 ; Drill tool change
                        M03 S1200 ; Spindle on CW 1200 RPM
                        M08 ; Coolant on
                        G00 X30 Y40 Z5 ; Rapid to first hole
                        G43 H02 Z5 ; Apply tool offset
                        G81 R2 Z-15 F100 ; Drilling cycle
                        X50 Y40 ; Second hole
                        X70 Y40 ; Third hole
                        X50 Y20 ; Fourth hole
                        X30 Y20 ; Fifth hole
                        G80 ; Cancel drilling cycle
                        G00 Z50 ; Rapid retract
                        M09 ; Coolant off
                        M05 ; Spindle stop
                        M30 ; Program end

CNC Programming Internship